Device for perforating the cores of yarn cones



March 17, 1931. w. N. GERE 1,796,448

I DEVICE FOR PERFORATING THE CORES OF YARN CONES o l Filed Nov. 3 925 I I\ a W l NVENTOR BY a/La/ 9M1.

ATTOR N EY Patented Mar. 17, l93l UNITE sr rs PATENT OFFICE WARD N. GERE, OF LIVERPOOL, NEV" YORK, ASS

V033, BY MESNE ASSIGNMENTS, TO

ECLIPSE TEXTILE DEVICES, INCORPORATED, OF ELIVIIE'A HEIGHTS, NEW YORK, A

CORPORATION OF NEW YORK DEVICE FOR PER-FORATIN G THE CORES OF YARN GONES Original application filed November 3, 1925, Serial Ito. Patent No. 1,724,015. Divided and this application filed June l3, ivwu'.

This invention relates to a device for perforating the cores of yarn conesand other wound masses of yarn, in order to permit the passing of dyes, air or other fluids through such cores.

The present application is a division of my copending application, filed November 3, 1925, Serial No. 66,533.

Cotton thread or other yarn is usually supplied to the knit goods manufactures in the form of cones wound upon hollow conical cores or spools of relatively stiff cardboard or equivalent comparatively inexpensive material.

A perforating device embodying my invention provides for bringing a rotating cutter against the inner surface of such a core to form a burrless perforation in the core, and for preventing the cutter from entering the mass of yarn wound on the core.

A specific perforating device embodying the invention is illustrated in the annexed drawing which is a longitudinal sectional View.

The device illustrated comprises a bracket 1, slidable vertically upon a suitable support 2, and provided with a horizontally projecting tapered mandrel 3 having a longitudinally extending recess at in its upper side and at right angles to the axis of the mandrel to form an abutment for the larger end of the hollow core A carrying the yarn cone a.

The base of the bracket 1 is slidable vertically upon the adjacent portion of the support 2 between lower and upper ad ustable limiting stops 6 and 7 on the support 2, and is yieldingly held against the upper stop 7 by a coiled spring 8. I

The recess 4 in the upper sideof the mandrel 3 extends from end to end thereof in alignment with a bearing 9 on the support 2.

A rotary shaft 10 is journalled in the hearing 9 and has one end extended into and through the recess a, and provided with separate sets of axially spaced rotary cutters 11 Serial No. 270,669.

of slightly less diameter than the transverse width of the slot or recess 4, the outer end of said shaft being connected directly to the armature shaft of a motor B which is also mounted upon the support 3.

The core A with the yarn cone a is placed by hand or otherwise around and upon the tapered mandrel 3 with its larger end face against the inclined abutment 5, the periphery of the mandrel being made to correspond approximately to the interior diameter and taper of the portion of the core A whichit is adapted to receive, so that, when the core with the yarn cone thereon is pressed upon the mandrel, the upper portion of the core will normallylie directly over the adjacent open side of the recess 4 and will extend across and axially some distance beyond the upper edges of the separate sets of cutters l1.

When the core with the yarn cone thereon is properly adjusted upon the mandrel 3, the yarn cone and bracket 1 carrying the mandrel 3 are pressed downwardly against the action of the spring 8 to cause the upper edges of the cutters to cut through the overlying portions of the core to form the necessary perforations or slots therein until restrained by the engagement of th lower end of the bracket 1 with the lower stop 6, which is adjusted to limit the downward movement of the mandrel and cone thereon to just sufficient distance to cause the cutters to cut through the upper side of the core the thicle ness thereof, by which operation the material cut away is carried into the recess 4, thereby avoiding the formation of burr-s on the periphery ef the core acent the openings, and also preventing the mutilation of the inner layer of yarn adjacent the core Immediately following this operation, the pressure upon the cone is relieved to allow the spring to return the mandr-l with the cone thereon upwardly until limitedby the stop 7 which is adjusted so as to prevent contact of the lower wall of the recess 4 with the cutters 11.

The core with the yarn cone thereonniay hen be turned by hand about the axis of the mandrel 3 to present another imperfora'te portion of the core in the open upper side of the recess 4, following which the cone and mandrel may again be depressed against the action of the spring 8 to form other sets of openings in the core, these operations being usually repeated until several sets of openings have been formed in different portions of the core, but, in some instances, one row of apertures may be suii'icient in which case a single operation only will be necessary.

What I claim is:

1. An apparatus for perforating cores of yarn bobbins, com arising a rotary cutter shaft and a cutter thereon, a support adapted to h ld a bobbin and having a recess in which said cutter turns, and means permitting relative movement between said support and said cutter transverse to the cutter shaft to bring the cutter against a core on the support.

2. An apparatus for perforating cores of yarn bobbins having means to rotate a cutter about an axis, a support adapted to hold a bobbin and hating a recess in which the cutter turns, means whereby said support may be moved laterally to the axis of rotation of the cutter to bring the cutter against a core on the support, and means limiting the movement of said support to prevent the cutter from striking the yarn.

3. A device for perforating the core of a wound mass of yarn, comprising two slidably connected members, a rotary cutter mounted on one of said members, a mandrel mounted on the other of said members and containing in one side an open recess for said cutter, means for limiting the relative movement of said slidably connected members in one direction to prevent the cutter from striking the bottom of said recess, and means for limiting said relative movement in the opposite direction when said cutter pr jects from said recess a distance equal to the thickness of the core to be perforated.

4. A device for perforating the core of a wound mass of yarn, comprising two slidably connected members, a rotary cutter mounted 011 one of said members, a mandrel mounted on the other of said members and containing in one side an open recess for said cutter, a stop for limiting the relative movement of said slidably connected members in one direction to prevent the cutter from striking the bottom of said recess, a second stop for limiting said relative movement in the opposite direction when said cutter projects from said recess a distance equal to the thickness of the core to be perforated, and yieldable means urging one of said slidable members into contact with said first stop.

5. A. device for perforating the cores of yarn cones, comprising a frame, a shaft journalled on said frame, a rotary cutter on said shaft, a bracket slidably mounted on said frame for movement transverse to said cutter shaft, a conical mandrel on said bracket having one of its sides parallel to said cutter my hand.

VARD N. GERE. 

